vendor: update shutdown

utils/shutdown/shutdown.go

@@ -1,62 +0,0 @@
-// Copyright 2017 fatedier, fatedier@gmail.com
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package shutdown
-
-import (
-	"sync"
-)
-
-type Shutdown struct {
-	doing   bool
-	ending  bool
-	startCh chan struct{}
-	doneCh  chan struct{}
-	mu      sync.Mutex
-}
-
-func New() *Shutdown {
-	return &Shutdown{
-		doing:   false,
-		ending:  false,
-		startCh: make(chan struct{}),
-		doneCh:  make(chan struct{}),
-	}
-}
-
-func (s *Shutdown) Start() {
-	s.mu.Lock()
-	defer s.mu.Unlock()
-	if !s.doing {
-		s.doing = true
-		close(s.startCh)
-	}
-}
-
-func (s *Shutdown) WaitStart() {
-	<-s.startCh
-}
-
-func (s *Shutdown) Done() {
-	s.mu.Lock()
-	defer s.mu.Unlock()
-	if !s.ending {
-		s.ending = true
-		close(s.doneCh)
-	}
-}
-
-func (s *Shutdown) WaitDone() {
-	<-s.doneCh
-}

utils/shutdown/shutdown_test.go

@@ -1,21 +0,0 @@
-package shutdown
-
-import (
-	"testing"
-	"time"
-)
-
-func TestShutdown(t *testing.T) {
-	s := New()
-	go func() {
-		time.Sleep(time.Millisecond)
-		s.Start()
-	}()
-	s.WaitStart()
-
-	go func() {
-		time.Sleep(time.Millisecond)
-		s.Done()
-	}()
-	s.WaitDone()
-}